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three forces in the x-y plane act on a 720 kg mass 1310 n directed at 5030o 1180 n directed at 1300o and 1040 n
a certain laboratory experiment requires an aluminum wire of length of 360 m and a resistance of 230 at 200degc what
a set of crash tests consists of running a test car moving at a speed of 128 ms into a solid wall strapped securely in
a postal worker pushes a 160 n bag of mail up a 31 degree ramp at a constant velocity the ramp exerts a frictional
a piano worker pushes a 5670 n piano up a 13 degree ramp at a constant velocity the ramp exerts a frictional force of
in astronomy it is common to expose a photographic plate to a particular portion of the night sky for quite some time
a pirate ship is locaed 560 m from a fort that is defening habour entrnce of an island a defense cannon at sea level
if a disk rotating at 500 rpm couples to a stationary disk with five times the moment of inertia what is the angular
the wave function for a wave on a taut string is yx t 0335 sin9t 3x 4 where x and y are in meters and t is in
a generator rotates at 71 hz in a magnetic field of 50x10-2 t it has 1000 turns and produces an rms voltage of 150v and
consider a cylindrical segment of a blood vessel 350cm long and 240mm in diameter what additional outward force would
a step-down transformer has a turns ratio of 110 and its primary is connected across the terminals of a standard 120-v
a 80g 39-cm-long rod hangs vertically on a frictionless horizontal axle passing through its center a 14g ball of
a 1200 kg car whose transmission is in neutral is coasting down a 10 hill with its brakes used to maintain a constant
a mass m 950 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration
a sinusoidal wave on a string is described by the wave function y 020 sin 070x 51t where x and y are in meters and t
a truck is traveling at 131 ms down a hill when the brakes on all four wheels lock the hill makes an angle of 15 deg
two blocks m1 98 kg and m2 40 kg are connected by a homogeneous rope that has a mass of mr 132 kg a constant
a chain consisting of five links each of mass 0120 kg is lifted vertically with a constant acceleration of a 43 ms2
please explain why the emission of the electrons doesnrsquot occur when the wavelength of incident radiation is set to
a 5000kg lunar lander is in orbit 30km above the surface of the moon it needs to move out to a 500km-high orbit in
a converging lensa must have at least one convex surfaceb cannot produce a virtual and reduced imagec is thicker at its
a plane mirrora produces both real and virtual imagesb always produces a virtual imagec always produces a real
transverse pulses travel with a speed of 220 ms along a taut copper wire whose diameter is 120 mm what is the tension